split program source file

pkg/shreder/program_fjsz.go

@@ -0,0 +1,71 @@
+package shreder
+
+import (
+	"fmt"
+
+	"github.com/gagliardetto/solana-go"
+	"github.com/near/borsh-go"
+)
+
+// only buy function with pump program
+var fjszProgramID = solana.MustPublicKeyFromBase58("FJsZbftBqRLfF7uqUKpm4s2goDr6xsQ5Q3mN7AFJB6hK")
+var (
+	fjszBuyTokensIX = []byte{0xe7, 0x3f, 0x99, 0x83, 0xf3, 0xed, 0xe3, 0x3c}
+)
+
+type fjszBuyArgs struct {
+	SolAmount   uint64
+	TokenAmount uint64
+}
+
+func parseFjszInstruction(tx VersionedTransaction, instructionIndex int) (TxSignalBatch, error) {
+	if instructionIndex >= len(tx.Instructions) {
+		return nil, fmt.Errorf("instruction index out of bounds")
+	}
+
+	instruction := tx.Instructions[instructionIndex]
+	if len(instruction.Data) == 0 {
+		return nil, fmt.Errorf("data is empty")
+	}
+
+	if !matchMethod(instruction.Data, fjszBuyTokensIX) {
+		return nil, nil
+	}
+	if len(instruction.Accounts) < 7 {
+		return nil, fmt.Errorf("accounts too short")
+	}
+	if len(instruction.Data) < 16 {
+		return nil, fmt.Errorf("data too short for fjzs buy args, len=%d", len(instruction.Data))
+	}
+
+	mint, err := tx.GetAccount(int(instruction.Accounts[2]))
+	if err != nil {
+		return nil, err
+	}
+	user, err := tx.GetAccount(int(instruction.Accounts[6]))
+	if err != nil {
+		return nil, err
+	}
+
+	var args fjszBuyArgs
+	if err := borsh.Deserialize(&args, instruction.Data[8:]); err != nil {
+		return nil, fmt.Errorf("failed to parse buy tokens args: %w", err)
+	}
+
+	return TxSignalBatch{&TxSignal{
+		TxHash:             tx.Signatures[0].String(),
+		Label:              "fjsz",
+		Maker:              user.String(),
+		Token0Address:      mint.String(),
+		Token1Address:      wsolMint,
+		Token0Amount:       formatTokenAmount(args.TokenAmount),
+		Token1Amount:       formatSolAmount(args.SolAmount),
+		Program:            "Pump",
+		Event:              "buy",
+		IsToken2022:        false,
+		IsMayhemMode:       false,
+		Block:              tx.Block,
+		Token0AmountUint64: args.TokenAmount,
+		Token1AmountUint64: args.SolAmount,
+	}}, nil
+}